package my.study.org.apache.velocity.examples.example1;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.    
 */

import org.apache.velocity.app.Velocity;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.Template;

import org.apache.velocity.exception.ParseErrorException;
import org.apache.velocity.exception.ResourceNotFoundException;

import java.io.*;
import java.util.ArrayList;

/**
 * This class is a simple demonstration of how the Velocity Template Engine can
 * be used in a standalone application.
 * 
 * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
 * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
 * @version $Id: Example.java 463298 2006-10-12 16:10:32Z henning $
 */

public class Example {
	public Example(String templateFile) {
		
	}

	public static ArrayList<String> getNames() {
		ArrayList<String> list = new ArrayList<String>();

		list.add("ArrayList element 1");
		list.add("ArrayList element 2");
		list.add("ArrayList element 3");
		list.add("ArrayList element 4");

		return list;
	}

	public static void main(String[] args) {
		try {
			String templateFile = "example.vm";
			
			VelocityContext context = new VelocityContext();
			context.put("list", getNames());

		

			Template template = null;

			try {
				System.out.println("Velocity.templateExists(templateFile): " + Velocity.templateExists(templateFile));
				template = Velocity.getTemplate(templateFile);
			} catch (ResourceNotFoundException rnfe) {
				System.out.println("Example : error : cannot find template "
						+ templateFile);
			} catch (ParseErrorException pee) {
				System.out.println("Example : Syntax error in template "
						+ templateFile + ":" + pee);
			}

			/*
			 * Now have the template engine process your template using the data
			 * placed into the context. Think of it as a 'merge' of the template
			 * and the data to produce the output stream.
			 */

			BufferedWriter writer = writer = new BufferedWriter(
					new OutputStreamWriter(System.out));

			if (template != null)
				template.merge(context, writer);

			/*
			 * flush and cleanup
			 */

			writer.flush();
			writer.close();
		} catch (Exception e) {
			System.out.println(e);
		}
	}
}
